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Merge tag 'perf-tools-for-v6.4-3-2023-05-06' of git://git.kernel.org/pub/scm/linux...
[linux-block.git] / include / kvm / arm_pmu.h
CommitLineData
caab277b 1/* SPDX-License-Identifier: GPL-2.0-only */
04fe4726
SZ		 2/*
3 * Copyright (C) 2015 Linaro Ltd.
4 * Author: Shannon Zhao <shannon.zhao@linaro.org>
04fe4726
SZ		 5 */
6
7#ifndef __ASM_ARM_KVM_PMU_H
8#define __ASM_ARM_KVM_PMU_H
9
04fe4726 10#include <linux/perf_event.h>
7755cec6 11#include <linux/perf/arm_pmuv3.h>
04fe4726 12
051ff581
SZ		 13#define ARMV8_PMU_CYCLE_IDX (ARMV8_PMU_MAX_COUNTERS - 1)
14
8cbebc41 15#ifdef CONFIG_HW_PERF_EVENTS
0efce9da 16
04fe4726
SZ		 17struct kvm_pmc {
18 u8 idx; /* index into the pmu->pmc array */
19 struct perf_event *perf_event;
04fe4726
SZ		 20};
21
84d751a0
FT		 22struct kvm_pmu_events {
23 u32 events_host;
24 u32 events_guest;
25};
26
04fe4726 27struct kvm_pmu {
e987a4c6 28 struct irq_work overflow_work;
84d751a0 29 struct kvm_pmu_events events;
04fe4726 30 struct kvm_pmc pmc[ARMV8_PMU_MAX_COUNTERS];
e987a4c6 31 int irq_num;
a2befacf 32 bool created;
b02386eb 33 bool irq_level;
04fe4726 34};
ab946834 35
db858060
AE		 36struct arm_pmu_entry {
37 struct list_head entry;
38 struct arm_pmu *arm_pmu;
39};
40
be399d82
SC		 41DECLARE_STATIC_KEY_FALSE(kvm_arm_pmu_available);
42
43static __always_inline bool kvm_arm_support_pmu_v3(void)
44{
45 return static_branch_likely(&kvm_arm_pmu_available);
46}
47
bb0c70bc 48#define kvm_arm_pmu_irq_initialized(v) ((v)->arch.pmu.irq_num >= VGIC_NR_SGIS)
051ff581
SZ		 49u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, u64 select_idx);
50void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val);
96b0eebc 51u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu);
88865bec 52u64 kvm_pmu_get_pmceid(struct kvm_vcpu *vcpu, bool pmceid1);
bca031e2 53void kvm_pmu_vcpu_init(struct kvm_vcpu *vcpu);
2aa36e98 54void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu);
5f0a714a 55void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu);
418e5ca8
AM		 56void kvm_pmu_disable_counter_mask(struct kvm_vcpu *vcpu, u64 val);
57void kvm_pmu_enable_counter_mask(struct kvm_vcpu *vcpu, u64 val);
b02386eb
SZ		 58void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu);
59void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu);
3dbbdf78
CD		 60bool kvm_pmu_should_notify_user(struct kvm_vcpu *vcpu);
61void kvm_pmu_update_run(struct kvm_vcpu *vcpu);
7a0adc70 62void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val);
76993739 63void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val);
7f766358
SZ		 64void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, u64 data,
65 u64 select_idx);
bb0c70bc
SZ		 66int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu,
67 struct kvm_device_attr *attr);
68int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu,
69 struct kvm_device_attr *attr);
70int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu,
71 struct kvm_device_attr *attr);
a2befacf 72int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu);
20492a62
MZ		 73
74struct kvm_pmu_events *kvm_get_pmu_events(void);
75void kvm_vcpu_pmu_restore_guest(struct kvm_vcpu *vcpu);
76void kvm_vcpu_pmu_restore_host(struct kvm_vcpu *vcpu);
77
78#define kvm_vcpu_has_pmu(vcpu) \
79 (test_bit(KVM_ARM_VCPU_PMU_V3, (vcpu)->arch.features))
80
81/*
82 * Updates the vcpu's view of the pmu events for this cpu.
83 * Must be called before every vcpu run after disabling interrupts, to ensure
84 * that an interrupt cannot fire and update the structure.
85 */
86#define kvm_pmu_update_vcpu_events(vcpu) \
87 do { \
88 if (!has_vhe() && kvm_vcpu_has_pmu(vcpu)) \
89 vcpu->arch.pmu.events = *kvm_get_pmu_events(); \
90 } while (0)
91
11af4c37
MZ		 92/*
93 * Evaluates as true when emulating PMUv3p5, and false otherwise.
94 */
95#define kvm_pmu_is_3p5(vcpu) \
96 (vcpu->kvm->arch.dfr0_pmuver.imp >= ID_AA64DFR0_EL1_PMUVer_V3P5)
97
3d0dba57
MZ		 98u8 kvm_arm_pmu_get_pmuver_limit(void);
99
04fe4726
SZ		 100#else
101struct kvm_pmu {
102};
ab946834 103
be399d82
SC		 104static inline bool kvm_arm_support_pmu_v3(void)
105{
106 return false;
107}
108
bb0c70bc 109#define kvm_arm_pmu_irq_initialized(v) (false)
051ff581
SZ		 110static inline u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu,
111 u64 select_idx)
112{
113 return 0;
114}
115static inline void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu,
116 u64 select_idx, u64 val) {}
96b0eebc
SZ		 117static inline u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu)
118{
119 return 0;
120}
bca031e2 121static inline void kvm_pmu_vcpu_init(struct kvm_vcpu *vcpu) {}
2aa36e98 122static inline void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu) {}
5f0a714a 123static inline void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu) {}
418e5ca8
AM		 124static inline void kvm_pmu_disable_counter_mask(struct kvm_vcpu *vcpu, u64 val) {}
125static inline void kvm_pmu_enable_counter_mask(struct kvm_vcpu *vcpu, u64 val) {}
b02386eb
SZ		 126static inline void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu) {}
127static inline void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu) {}
3dbbdf78
CD		 128static inline bool kvm_pmu_should_notify_user(struct kvm_vcpu *vcpu)
129{
130 return false;
131}
132static inline void kvm_pmu_update_run(struct kvm_vcpu *vcpu) {}
7a0adc70 133static inline void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val) {}
76993739 134static inline void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val) {}
7f766358
SZ		 135static inline void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu,
136 u64 data, u64 select_idx) {}
bb0c70bc
SZ		 137static inline int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu,
138 struct kvm_device_attr *attr)
139{
140 return -ENXIO;
141}
142static inline int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu,
143 struct kvm_device_attr *attr)
144{
145 return -ENXIO;
146}
147static inline int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu,
148 struct kvm_device_attr *attr)
149{
150 return -ENXIO;
151}
a2befacf
CD		 152static inline int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu)
153{
154 return 0;
155}
88865bec
MZ		 156static inline u64 kvm_pmu_get_pmceid(struct kvm_vcpu *vcpu, bool pmceid1)
157{
158 return 0;
159}
5421db1b 160
20492a62 161#define kvm_vcpu_has_pmu(vcpu) ({ false; })
11af4c37 162#define kvm_pmu_is_3p5(vcpu) ({ false; })
20492a62
MZ		 163static inline void kvm_pmu_update_vcpu_events(struct kvm_vcpu *vcpu) {}
164static inline void kvm_vcpu_pmu_restore_guest(struct kvm_vcpu *vcpu) {}
165static inline void kvm_vcpu_pmu_restore_host(struct kvm_vcpu *vcpu) {}
3d0dba57
MZ		 166static inline u8 kvm_arm_pmu_get_pmuver_limit(void)
167{
168 return 0;
169}
20492a62 170
04fe4726
SZ		 171#endif
172
173#endif
Linux 6.x block layer and io_uring tree(s)